package com.itheima.reggie.controller;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.plugins.pagination.Page;
import com.itheima.reggie.common.R;
import com.itheima.reggie.entity.Employee;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.EmployeeService;
import lombok.extern.slf4j.Slf4j;
import org.apache.commons.lang.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.util.DigestUtils;
import org.springframework.web.bind.annotation.*;

import javax.servlet.http.HttpServletRequest;

@Slf4j
@RestController
@RequestMapping("/employee")
public class EmployeeController {

    @Autowired
    private EmployeeService employeeService;

    @Autowired
    private CategoryService categoryService;

    @PostMapping("login")
    public R<Employee> login(HttpServletRequest request, @RequestBody Employee employee){

        //1. 将页面提交的密码password进行md5加密处理
        String password = employee.getPassword();//获取明文密码
        password= DigestUtils.md5DigestAsHex(password.getBytes());//密码加密

        //2.根据页面提交的用户名username查询数据库
        LambdaQueryWrapper<Employee> queryWrapper=new LambdaQueryWrapper<>();
        queryWrapper.eq(Employee::getUsername,employee.getUsername());
        Employee emp = employeeService.getOne(queryWrapper);

        //3.如果没有查询到则返回登录失败结果
        if (emp==null){
            return R.error("登陆失败");
        }

        //4.密码比对,如果 不一致则返回登录失败结果
        if (!emp.getPassword().equals(password)){
            return R.error("登录失败");
        }

        //5.查看员工状态,如果为已禁用状态,则返回员工已禁用结果
        if (emp.getStatus()==0){
            return R.error("账号已禁用");
        }

        //6.登录成功,将员工id存入session并返回登录成功结果
        request.getSession().setAttribute("employee",emp.getId());
        return R.success(emp);
    }

    @PostMapping("logout")
    public R<String> logout(HttpServletRequest request){
        //清理Session中保存的当前登录员工的id
        request.getSession().removeAttribute("employee");
        return R.success("退出成功");
    }
    @PostMapping
    public R<String> save(HttpServletRequest request,@RequestBody Employee employee){
        log.info("新增员工,员工信息:{}",employee.toString());

        employee.setPassword(DigestUtils.md5DigestAsHex("123456".getBytes()));

        employeeService.save(employee);
        return R.success("新增成功");
    }

    @GetMapping("/page")
    public R<Page> page(int page,int pageSize,String name){
        log.info("page= {},pageSize= {}, name= {}",page,pageSize,name);
        //构建分页查询器
        Page pageInfo=new Page(page,pageSize);

        //条件构造器
        LambdaQueryWrapper<Employee> queryWrapper=new LambdaQueryWrapper<>();

        //添加查询条件
        queryWrapper.like(StringUtils.isNotEmpty(name),Employee::getName,name);
        //添加排序条件
        queryWrapper.orderByDesc(Employee::getUpdateTime);

        employeeService.page(pageInfo,queryWrapper);

        return  R.success(pageInfo);
    }
    /**
     * 根据id修改员工信息
     * @param employee
     * @return
     */
    @PutMapping
    public R<String> update(@RequestBody Employee employee){
        log.info(employee.toString());

        /*//获取登录用户id
        Long empId = (Long) request.getSession().getAttribute("employee");

        //更新修改时间
        employee.setUpdateTime(LocalDateTime.now());
        //更新修改人
        employee.setUpdateUser(empId);*/

        long id = Thread.currentThread().getId();
        log.info("线程id为：{}",id);

        employeeService.updateById(employee);

        return R.success("修改员工信息成功");
    }

    @GetMapping("/{id}")
    public R<Employee> getById(@PathVariable Long id){
        log.info("根据id查询员工信息...");
        Employee employee = employeeService.getById(id);
        if(employee !=null){
            return R.success(employee);
        }
        return R.error("没有查询到对应员工信息");
    }

    @DeleteMapping
    public R<String> delete(Long id){
        log.info("删除分类,id为:{}",id);
        categoryService.removeById(id);
        return R.success("分类信息删除成功");
    }
}